How to read a cheese wheel. A wheel of Lucini Organics Parmigiano Reggiano, close-up. On the side of every wheel is the fire-mark stamp of the Consortium, the registration number of the production farm, and the month and year of production. On the whole rind you see the words: Parmigiano Reggiano. More importantly, you can see "D.O.P." and the European Economic Community stamp, identifying the production farm.
From Making Organic Parmigiano Reggiano